Brownells Detent Ball Spring Refill Kit 9/64" (3.6mm) 20-Pack

The Brownells Detent Ball Spring Refill Kit provides a convenient 20-pack of replacement detent ball springs for gunsmithing and firearm maintenance. Each spring measures 9/64" (3.6mm) in diameter and 3/4" in length, making them suitable for replacing worn or lost detent springs in a variety of firearm assemblies. An essential shop supply for gunsmiths who frequently service detent-style pins, plungers, and selector mechanisms.